掃一掃,加微信
聯系客服,馬上詢價
發布時間:2021-12-17 11:55:16 人氣(qi):98751 來源(yuan):
熱水泵(beng)集式密封(feng)的大(da)多數(shu)主要特性(xing)是其控(kong)制密封(feng)功(gong)能、摩(mo)擦(ca)(ca)力(li)(li)、磨(mo)損和(he)(he)壽命的自動界(jie)面潤滑(hua)(hua)機理。一切取(qu)決于(yu)(yu)穿過界(jie)面并建立潤滑(hua)(hua)膜的液體(ti)(ti)以便密封(feng)在(zai)(zai)實(shi)際無接觸,通常是混(hun)合磨(mo)擦(ca)(ca),介(jie)(jie)于(yu)(yu)干摩(mo)擦(ca)(ca)和(he)(he)完整液膜之間的潤滑(hua)(hua)摩(mo)擦(ca)(ca)狀態下運行。在(zai)(zai)腔體(ti)(ti)壓(ya)力(li)(li)作(zuo)用下介(jie)(jie)質穿過密封(feng)摩(mo)擦(ca)(ca)副端面,表面張力(li)(li)和(he)(he)離心力(li)(li)在(zai)(zai)此(ci)時(shi)影響不(bu)大(da),流體(ti)(ti)壓(ya)力(li)(li)持續下降(jiang)直到它達到外部背壓(ya),此(ci)壓(ya)力(li)(li)作(zuo)用類(lei)似(si)于(yu)(yu)流體(ti)(ti)靜壓(ya)時(shi)軸承(cheng)的承(cheng)載(zai)功(gong)能。這取(qu)決于(yu)(yu)介(jie)(jie)質粘度、轉速和(he)(he)端面間隙變化。
熱(re)水泵集(ji)式(shi)密封(feng)(feng)(feng)要(yao)起到(dao)靜(jing)環(huan)(huan)和(he)(he)動(dong)(dong)環(huan)(huan)的密封(feng)(feng)(feng)作(zuo)用(yong),同時也起到(dao)浮(fu)動(dong)(dong)緩沖作(zuo)用(yong),要(yao)求(qiu)靜(jing)環(huan)(huan)的輔助密封(feng)(feng)(feng)元(yuan)件能(neng)保證(zheng)靜(jing)環(huan)(huan)與壓(ya)蓋之間(jian)的密封(feng)(feng)(feng)性(xing)(xing)和(he)(he)靜(jing)環(huan)(huan)有(you)一定的浮(fu)動(dong)(dong)性(xing)(xing),動(dong)(dong)環(huan)(huan)的輔助密封(feng)(feng)(feng)元(yuan)件能(neng)保證(zheng)動(dong)(dong)環(huan)(huan)與軸與軸套之間(jian)的密封(feng)(feng)(feng)性(xing)(xing)和(he)(he)動(dong)(dong)環(huan)(huan)的浮(fu)動(dong)(dong)性(xing)(xing),材(cai)料要(yao)求(qiu)耐(nai)熱(re)或(huo)耐(nai)寒并能(neng)與介質相容。起到(dao)將軸的轉矩(ju)傳(chuan)(chuan)給(gei)動(dong)(dong)環(huan)(huan)的作(zuo)用(yong),中間(jian)傳(chuan)(chuan)動(dong)(dong)的傳(chuan)(chuan)動(dong)(dong)銷、壓(ya)環(huan)(huan)—傳(chuan)(chuan)動(dong)(dong)環(huan)(huan)、傳(chuan)(chuan)動(dong)(dong)銷—彈簧座(zuo)均起傳(chuan)(chuan)動(dong)(dong)作(zuo)用(yong),材(cai)料要(yao)求(qiu)耐(nai)磨(mo)和(he)(he)耐(nai)腐蝕。
緊固件(jian)要(yao)起到靜、動(dong)環(huan)的(de)(de)定(ding)位、緊固和盛裝的(de)(de)作用(yong),要(yao)求(qiu)定(ding)位正確,保證(zheng)摩擦副密封面(mian)處于正確的(de)(de)位置并保持良好(hao)貼(tie)合的(de)(de)彈簧比壓(ya)。同時要(yao)求(qiu)拆裝方便(bian)、容易就位、能重復(fu)利(li)用(yong)。與輔助密封配合處,注意(yi)安裝密封環(huan)的(de)(de)導向側(ce)角(jiao)和壓(ya)彈量。特別應注意(yi)動(dong)環(huan)輔助密封件(jian)與軸套(tao)配合處要(yao)求(qiu)耐(nai)腐蝕和耐(nai)磨(mo)損,必(bi)要(yao)時采用(yong)硬面(mian)復(fu)層。
熱水泵集式密(mi)封(feng)(feng)一般(ban)配上平衡循環(huan)系統(tong),可使用在(zai)易(yi)燃、易(yi)爆、有(you)毒及腐蝕、高(gao)真空等(deng)對密(mi)封(feng)(feng)要求更為嚴格的場合。密(mi)封(feng)(feng)結構為外沖(chong)(chong)洗(xi)結構,沖(chong)(chong)洗(xi)液可以為清潔的水也可為工業回(hui)用水,密(mi)封(feng)(feng)腔壓力高(gao)于(yu)沖(chong)(chong)洗(xi)液的壓力,沖(chong)(chong)洗(xi)液在(zai)輔(fu)助套的上端(duan)輸入,在(zai)輔(fu)助套的下端(duan)輸出,循環(huan)使用,密(mi)封(feng)(feng)起到冷卻(que)沖(chong)(chong)洗(xi)的作用,其輔(fu)助裝置(zhi)有(you)調溫器、平衡罐、強制循環(huan)平衡系統(tong)等(deng)。